Revert "Disable JSONSchemaCompiler tests"

This reverts commit 2c7db28c.

Reason for revert: The test failures were caused due to crbug.com/gn/215 which caused spurious failures in 
incremental rebuilds. The corresponding GN roll has now been reverted.

Original change's description:
> Disable JSONSchemaCompiler tests
>
> The tests started to fail on
> https://ci.chromium.org/p/chromium/builders/ci/Mac10.10%20Tests when
> https://crbug.com/1113513#c16 was landed.
> The revert was supposed to fix other failures.
>
> Tbr: karandeepb@chromium.org
> Bug: 1113513
> Change-Id: Ia800eba3f90cf3be44bd800c999d7a694f819573
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2517567
> Reviewed-by: Christian Dullweber <dullweber@chromium.org>
> Commit-Queue: Christian Dullweber <dullweber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#823954}

TBR=karandeepb@chromium.org,dullweber@chromium.org

Change-Id: I30e936c84c9dcae8e2702eed89e320ad7f4ff5a1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1113513
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518308Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824168}

chrome/browser/extensions/api/declarative_net_request/declarative_net_request_unittest.cc

@@ -640,8 +640,7 @@ TEST_P(SingleRulesetTest, InvalidJSONRules_StrongTypes) {
 
 // Ensures that rules which can't be parsed are ignored and cause an install
 // warning.
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST_P(SingleRulesetTest, DISABLED_InvalidJSONRules_Parsed) {
+TEST_P(SingleRulesetTest, InvalidJSONRules_Parsed) {
   const char* kRules = R"(
     [
       {

tools/json_schema_compiler/test/error_generation_unittest.cc

@@ -146,8 +146,7 @@ TEST(JsonSchemaCompilerErrorTest, WrongParameterCreationType) {
   }
 }
 
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST(JsonSchemaCompilerErrorTest, DISABLED_WrongTypeValueType) {
+TEST(JsonSchemaCompilerErrorTest, WrongTypeValueType) {
   {
     auto value = std::make_unique<base::DictionaryValue>();
     EXPECT_TRUE(EqualsUtf16("", GetPopulateError<errors::ObjectType>(*value)));
@@ -228,8 +227,8 @@ TEST(JsonSchemaCompilerErrorTest, BadEnumValue) {
 }
 
 // Warn but don't fail out errors
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST(JsonSchemaCompilerErrorTest, DISABLED_WarnOnOptionalFailure) {
+
+TEST(JsonSchemaCompilerErrorTest, WarnOnOptionalFailure) {
   {
     std::unique_ptr<base::DictionaryValue> value =
         Dictionary("string", std::make_unique<Value>("bling"));
@@ -249,8 +248,7 @@ TEST(JsonSchemaCompilerErrorTest, DISABLED_WarnOnOptionalFailure) {
   }
 }
 
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST(JsonSchemaCompilerErrorTest, DISABLED_OptionalBinaryTypeFailure) {
+TEST(JsonSchemaCompilerErrorTest, OptionalBinaryTypeFailure) {
   {
     std::unique_ptr<base::DictionaryValue> value =
         Dictionary("data", std::make_unique<Value>(Value::Type::BINARY));
@@ -271,8 +269,7 @@ TEST(JsonSchemaCompilerErrorTest, DISABLED_OptionalBinaryTypeFailure) {
   }
 }
 
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST(JsonSchemaCompilerErrorTest, DISABLED_OptionalArrayTypeFailure) {
+TEST(JsonSchemaCompilerErrorTest, OptionalArrayTypeFailure) {
   {
     std::unique_ptr<base::DictionaryValue> value =
         Dictionary("TheArray", std::make_unique<base::ListValue>());
@@ -290,8 +287,7 @@ TEST(JsonSchemaCompilerErrorTest, DISABLED_OptionalArrayTypeFailure) {
   }
 }
 
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST(JsonSchemaCompilerErrorTest, DISABLED_OptionalUnableToPopulateArray) {
+TEST(JsonSchemaCompilerErrorTest, OptionalUnableToPopulateArray) {
   {
     std::unique_ptr<base::ListValue> params_value =
         List(std::make_unique<Value>(5));
@@ -313,8 +309,7 @@ TEST(JsonSchemaCompilerErrorTest, DISABLED_OptionalUnableToPopulateArray) {
   }
 }
 
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST(JsonSchemaCompilerErrorTest, DISABLED_MultiplePopulationErrors) {
+TEST(JsonSchemaCompilerErrorTest, MultiplePopulationErrors) {
   {
     std::unique_ptr<base::DictionaryValue> value =
         Dictionary("TheArray", std::make_unique<Value>(5));
@@ -333,8 +328,7 @@ TEST(JsonSchemaCompilerErrorTest, DISABLED_MultiplePopulationErrors) {
   }
 }
 
-// Disabled due to consistent failures on some bots https://crbug.com/1113513.
-TEST(JsonSchemaCompilerErrorTest, DISABLED_TooManyKeys) {
+TEST(JsonSchemaCompilerErrorTest, TooManyKeys) {
   {
     std::unique_ptr<base::DictionaryValue> value =
         Dictionary("string", std::make_unique<Value>("yes"));